1. Graduate Institute of Biomedical Materials and Engineering, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan
2. Stem Cell Research Center, Taipei Medical University, Taipei 110, Taiwan
3. Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO 80523, USA
4. Department of Neurosurgery, Taipei Medical University Hospital, Taipei 110, Taiwan
5. School of Medicine, Taipei Medical University, Taipei 110, Taiwan
6. Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei 100, Taiwan
7. Institute of Biochemistry and Molecular Biology, National Yang Ming University, Taipei 112, Taiwan
8. Wake Forest Institute of Regenerative Medicine, Winston-Salem, NC 27157, USA
9. Department of Biomedical Engineering, College of Engineering and School of Medicine, Wayne State University, Detroit, MI 48201, USA
10. Center for Molecular Medicine and Genetics, Wayne State University, Detroit, MI 48201, USA